src/flash/tms470.c

   1 /***************************************************************************
   2  *   Copyright (C) 2007,2008 by Christopher Kilgour                        *
   3  *   techie |_at_| whiterocker |_dot_| com                                 *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include "tms470.h"
  25
  26
  27 static int tms470_register_commands(struct command_context_s *cmd_ctx);
  28 static int tms470_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
  29 static int tms470_erase(struct flash_bank_s *bank, int first, int last);
  30 static int tms470_protect(struct flash_bank_s *bank, int set, int first, int last);
  31 static int tms470_write(struct flash_bank_s *bank, uint8_t * buffer, uint32_t offset, uint32_t count);
  32 static int tms470_probe(struct flash_bank_s *bank);
  33 static int tms470_auto_probe(struct flash_bank_s *bank);
  34 static int tms470_erase_check(struct flash_bank_s *bank);
  35 static int tms470_protect_check(struct flash_bank_s *bank);
  36 static int tms470_info(struct flash_bank_s *bank, char *buf, int buf_size);
  37
  38 flash_driver_t tms470_flash = {
  39         .name = "tms470",
  40         .register_commands = tms470_register_commands,
  41         .flash_bank_command = tms470_flash_bank_command,
  42         .erase = tms470_erase,
  43         .protect = tms470_protect,
  44         .write = tms470_write,
  45         .probe = tms470_probe,
  46         .auto_probe = tms470_auto_probe,
  47         .erase_check = tms470_erase_check,
  48         .protect_check = tms470_protect_check,
  49         .info = tms470_info
  50 };
  51
  52 /* ----------------------------------------------------------------------
  53                       Internal Support, Helpers
  54    ---------------------------------------------------------------------- */
  55
  56 const flash_sector_t TMS470R1A256_SECTORS[] = {
  57         {0x00000000, 0x00002000, -1, -1},
  58         {0x00002000, 0x00002000, -1, -1},
  59         {0x00004000, 0x00002000, -1, -1},
  60         {0x00006000, 0x00002000, -1, -1},
  61         {0x00008000, 0x00008000, -1, -1},
  62         {0x00010000, 0x00008000, -1, -1},
  63         {0x00018000, 0x00008000, -1, -1},
  64         {0x00020000, 0x00008000, -1, -1},
  65         {0x00028000, 0x00008000, -1, -1},
  66         {0x00030000, 0x00008000, -1, -1},
  67         {0x00038000, 0x00002000, -1, -1},
  68         {0x0003A000, 0x00002000, -1, -1},
  69         {0x0003C000, 0x00002000, -1, -1},
  70         {0x0003E000, 0x00002000, -1, -1},
  71 };
  72
  73 #define TMS470R1A256_NUM_SECTORS \
  74         (sizeof(TMS470R1A256_SECTORS)/sizeof(TMS470R1A256_SECTORS[0]))
  75
  76 const flash_sector_t TMS470R1A288_BANK0_SECTORS[] = {
  77         {0x00000000, 0x00002000, -1, -1},
  78         {0x00002000, 0x00002000, -1, -1},
  79         {0x00004000, 0x00002000, -1, -1},
  80         {0x00006000, 0x00002000, -1, -1},
  81 };
  82
  83 #define TMS470R1A288_BANK0_NUM_SECTORS \
  84         (sizeof(TMS470R1A288_BANK0_SECTORS)/sizeof(TMS470R1A288_BANK0_SECTORS[0]))
  85
  86 const flash_sector_t TMS470R1A288_BANK1_SECTORS[] = {
  87         {0x00040000, 0x00010000, -1, -1},
  88         {0x00050000, 0x00010000, -1, -1},
  89         {0x00060000, 0x00010000, -1, -1},
  90         {0x00070000, 0x00010000, -1, -1},
  91 };
  92
  93 #define TMS470R1A288_BANK1_NUM_SECTORS \
  94         (sizeof(TMS470R1A288_BANK1_SECTORS)/sizeof(TMS470R1A288_BANK1_SECTORS[0]))
  95
  96 const flash_sector_t TMS470R1A384_BANK0_SECTORS[] = {
  97         {0x00000000, 0x00002000, -1, -1},
  98         {0x00002000, 0x00002000, -1, -1},
  99         {0x00004000, 0x00004000, -1, -1},
 100         {0x00008000, 0x00004000, -1, -1},
 101         {0x0000C000, 0x00004000, -1, -1},
 102         {0x00010000, 0x00004000, -1, -1},
 103         {0x00014000, 0x00004000, -1, -1},
 104         {0x00018000, 0x00002000, -1, -1},
 105         {0x0001C000, 0x00002000, -1, -1},
 106         {0x0001E000, 0x00002000, -1, -1},
 107 };
 108
 109 #define TMS470R1A384_BANK0_NUM_SECTORS \
 110         (sizeof(TMS470R1A384_BANK0_SECTORS)/sizeof(TMS470R1A384_BANK0_SECTORS[0]))
 111
 112 const flash_sector_t TMS470R1A384_BANK1_SECTORS[] = {
 113         {0x00020000, 0x00008000, -1, -1},
 114         {0x00028000, 0x00008000, -1, -1},
 115         {0x00030000, 0x00008000, -1, -1},
 116         {0x00038000, 0x00008000, -1, -1},
 117 };
 118
 119 #define TMS470R1A384_BANK1_NUM_SECTORS \
 120         (sizeof(TMS470R1A384_BANK1_SECTORS)/sizeof(TMS470R1A384_BANK1_SECTORS[0]))
 121
 122 const flash_sector_t TMS470R1A384_BANK2_SECTORS[] = {
 123         {0x00040000, 0x00008000, -1, -1},
 124         {0x00048000, 0x00008000, -1, -1},
 125         {0x00050000, 0x00008000, -1, -1},
 126         {0x00058000, 0x00008000, -1, -1},
 127 };
 128
 129 #define TMS470R1A384_BANK2_NUM_SECTORS \
 130         (sizeof(TMS470R1A384_BANK2_SECTORS)/sizeof(TMS470R1A384_BANK2_SECTORS[0]))
 131
 132 /* ---------------------------------------------------------------------- */
 133
 134 static int tms470_read_part_info(struct flash_bank_s *bank)
 135 {
 136         tms470_flash_bank_t *tms470_info = bank->driver_priv;
 137         target_t *target = bank->target;
 138         uint32_t device_ident_reg;
 139         uint32_t silicon_version;
 140         uint32_t technology_family;
 141         uint32_t rom_flash;
 142         uint32_t part_number;
 143         char *part_name;
 144
 145         /* we shall not rely on the caller in this test, this function allocates memory,
 146            thus and executing the code more than once may cause memory leak */
 147         if (tms470_info->device_ident_reg)
 148           return ERROR_OK;
 149
 150         /* read and parse the device identification register */
 151         target_read_u32(target, 0xFFFFFFF0, &device_ident_reg);
 152
 153         LOG_INFO("device_ident_reg = 0x%08" PRIx32 "", device_ident_reg);
 154
 155         if ((device_ident_reg & 7) == 0)
 156         {
 157                 LOG_WARNING("Cannot identify target as a TMS470 family.");
 158                 return ERROR_FLASH_OPERATION_FAILED;
 159         }
 160
 161         silicon_version = (device_ident_reg >> 12) & 0xF;
 162         technology_family = (device_ident_reg >> 11) & 1;
 163         rom_flash = (device_ident_reg >> 10) & 1;
 164         part_number = (device_ident_reg >> 3) & 0x7f;
 165
 166         /*
 167          * If the part number is known, determine if the flash bank is valid
 168          * based on the base address being within the known flash bank
 169          * ranges.  Then fixup/complete the remaining fields of the flash
 170          * bank structure.
 171          */
 172         switch (part_number)
 173         {
 174         case 0x0a:
 175                 part_name = "TMS470R1A256";
 176
 177                 if (bank->base >= 0x00040000)
 178                 {
 179                         LOG_ERROR("No %s flash bank contains base address 0x%08" PRIx32 ".", part_name, bank->base);
 180                         return ERROR_FLASH_OPERATION_FAILED;
 181                 }
 182                 tms470_info->ordinal = 0;
 183                 bank->base = 0x00000000;
 184                 bank->size = 256 * 1024;
 185                 bank->num_sectors = TMS470R1A256_NUM_SECTORS;
 186                 bank->sectors = malloc(sizeof(TMS470R1A256_SECTORS));
 187                 if (!bank->sectors)
 188                 {
 189                         return ERROR_FLASH_OPERATION_FAILED;
 190                 }
 191                 (void)memcpy(bank->sectors, TMS470R1A256_SECTORS, sizeof(TMS470R1A256_SECTORS));
 192                 break;
 193
 194         case 0x2b:
 195                 part_name = "TMS470R1A288";
 196
 197                 if (bank->base < 0x00008000)
 198                 {
 199                         tms470_info->ordinal = 0;
 200                         bank->base = 0x00000000;
 201                         bank->size = 32 * 1024;
 202                         bank->num_sectors = TMS470R1A288_BANK0_NUM_SECTORS;
 203                         bank->sectors = malloc(sizeof(TMS470R1A288_BANK0_SECTORS));
 204                         if (!bank->sectors)
 205                         {
 206                                 return ERROR_FLASH_OPERATION_FAILED;
 207                         }
 208                         (void)memcpy(bank->sectors, TMS470R1A288_BANK0_SECTORS, sizeof(TMS470R1A288_BANK0_SECTORS));
 209                 }
 210                 else if ((bank->base >= 0x00040000) && (bank->base < 0x00080000))
 211                 {
 212                         tms470_info->ordinal = 1;
 213                         bank->base = 0x00040000;
 214                         bank->size = 256 * 1024;
 215                         bank->num_sectors = TMS470R1A288_BANK1_NUM_SECTORS;
 216                         bank->sectors = malloc(sizeof(TMS470R1A288_BANK1_SECTORS));
 217                         if (!bank->sectors)
 218                         {
 219                                 return ERROR_FLASH_OPERATION_FAILED;
 220                         }
 221                         (void)memcpy(bank->sectors, TMS470R1A288_BANK1_SECTORS, sizeof(TMS470R1A288_BANK1_SECTORS));
 222                 }
 223                 else
 224                 {
 225                         LOG_ERROR("No %s flash bank contains base address 0x%08" PRIx32 ".", part_name, bank->base);
 226                         return ERROR_FLASH_OPERATION_FAILED;
 227                 }
 228                 break;
 229
 230         case 0x2d:
 231                 part_name = "TMS470R1A384";
 232
 233                 if (bank->base < 0x00020000)
 234                 {
 235                         tms470_info->ordinal = 0;
 236                         bank->base = 0x00000000;
 237                         bank->size = 128 * 1024;
 238                         bank->num_sectors = TMS470R1A384_BANK0_NUM_SECTORS;
 239                         bank->sectors = malloc(sizeof(TMS470R1A384_BANK0_SECTORS));
 240                         if (!bank->sectors)
 241                         {
 242                                 return ERROR_FLASH_OPERATION_FAILED;
 243                         }
 244                         (void)memcpy(bank->sectors, TMS470R1A384_BANK0_SECTORS, sizeof(TMS470R1A384_BANK0_SECTORS));
 245                 }
 246                 else if ((bank->base >= 0x00020000) && (bank->base < 0x00040000))
 247                 {
 248                         tms470_info->ordinal = 1;
 249                         bank->base = 0x00020000;
 250                         bank->size = 128 * 1024;
 251                         bank->num_sectors = TMS470R1A384_BANK1_NUM_SECTORS;
 252                         bank->sectors = malloc(sizeof(TMS470R1A384_BANK1_SECTORS));
 253                         if (!bank->sectors)
 254                         {
 255                                 return ERROR_FLASH_OPERATION_FAILED;
 256                         }
 257                         (void)memcpy(bank->sectors, TMS470R1A384_BANK1_SECTORS, sizeof(TMS470R1A384_BANK1_SECTORS));
 258                 }
 259                 else if ((bank->base >= 0x00040000) && (bank->base < 0x00060000))
 260                 {
 261                         tms470_info->ordinal = 2;
 262                         bank->base = 0x00040000;
 263                         bank->size = 128 * 1024;
 264                         bank->num_sectors = TMS470R1A384_BANK2_NUM_SECTORS;
 265                         bank->sectors = malloc(sizeof(TMS470R1A384_BANK2_SECTORS));
 266                         if (!bank->sectors)
 267                         {
 268                                 return ERROR_FLASH_OPERATION_FAILED;
 269                         }
 270                         (void)memcpy(bank->sectors, TMS470R1A384_BANK2_SECTORS, sizeof(TMS470R1A384_BANK2_SECTORS));
 271                 }
 272                 else
 273                 {
 274                         LOG_ERROR("No %s flash bank contains base address 0x%08" PRIx32 ".", part_name, bank->base);
 275                         return ERROR_FLASH_OPERATION_FAILED;
 276                 }
 277                 break;
 278
 279         default:
 280                 LOG_WARNING("Could not identify part 0x%02x as a member of the TMS470 family.", (unsigned)part_number);
 281                 return ERROR_FLASH_OPERATION_FAILED;
 282         }
 283
 284         /* turn off memory selects */
 285         target_write_u32(target, 0xFFFFFFE4, 0x00000000);
 286         target_write_u32(target, 0xFFFFFFE0, 0x00000000);
 287
 288         bank->chip_width = 32;
 289         bank->bus_width = 32;
 290
 291         LOG_INFO("Identified %s, ver=%d, core=%s, nvmem=%s.",
 292                  part_name,
 293                  (int)(silicon_version),
 294                  (technology_family ? "1.8v" : "3.3v"),
 295                  (rom_flash ? "rom" : "flash"));
 296
 297         tms470_info->device_ident_reg = device_ident_reg;
 298         tms470_info->silicon_version = silicon_version;
 299         tms470_info->technology_family = technology_family;
 300         tms470_info->rom_flash = rom_flash;
 301         tms470_info->part_number = part_number;
 302         tms470_info->part_name = part_name;
 303
 304         /*
 305          * Disable reset on address access violation.
 306          */
 307         target_write_u32(target, 0xFFFFFFE0, 0x00004007);
 308
 309         return ERROR_OK;
 310 }
 311
 312 /* ---------------------------------------------------------------------- */
 313
 314 static uint32_t keysSet = 0;
 315 static uint32_t flashKeys[4];
 316
 317 static int tms470_handle_flash_keyset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 318 {
 319         if (argc > 4)
 320         {
 321                 command_print(cmd_ctx, "tms470 flash_keyset <key0> <key1> <key2> <key3>");
 322                 return ERROR_INVALID_ARGUMENTS;
 323         }
 324         else if (argc == 4)
 325         {
 326                 int i;
 327
 328                 for (i = 0; i < 4; i++)
 329                 {
 330                         int start = (0 == strncmp(args[i], "0x", 2)) ? 2 : 0;
 331
 332                         if (1 != sscanf(&args[i][start], "%" SCNx32 "", &flashKeys[i]))
 333                         {
 334                                 command_print(cmd_ctx, "could not process flash key %s", args[i]);
 335                                 LOG_ERROR("could not process flash key %s", args[i]);
 336                                 return ERROR_INVALID_ARGUMENTS;
 337                         }
 338                 }
 339
 340                 keysSet = 1;
 341         }
 342         else if (argc != 0)
 343         {
 344                 command_print(cmd_ctx, "tms470 flash_keyset <key0> <key1> <key2> <key3>");
 345                 return ERROR_INVALID_ARGUMENTS;
 346         }
 347
 348         if (keysSet)
 349         {
 350                 command_print(cmd_ctx, "using flash keys 0x%08" PRIx32 ", 0x%08" PRIx32 ", 0x%08" PRIx32 ", 0x%08" PRIx32 "",
 351                               flashKeys[0], flashKeys[1], flashKeys[2], flashKeys[3]);
 352         }
 353         else
 354         {
 355                 command_print(cmd_ctx, "flash keys not set");
 356         }
 357
 358         return ERROR_OK;
 359 }
 360
 361 static const uint32_t FLASH_KEYS_ALL_ONES[] = { 0xFFFFFFFF, 0xFFFFFFFF,
 362         0xFFFFFFFF, 0xFFFFFFFF,
 363 };
 364
 365 static const uint32_t FLASH_KEYS_ALL_ZEROS[] = { 0x00000000, 0x00000000,
 366         0x00000000, 0x00000000,
 367 };
 368
 369 static const uint32_t FLASH_KEYS_MIX1[] = { 0xf0fff0ff, 0xf0fff0ff,
 370         0xf0fff0ff, 0xf0fff0ff
 371 };
 372
 373 static const uint32_t FLASH_KEYS_MIX2[] = { 0x0000ffff, 0x0000ffff,
 374         0x0000ffff, 0x0000ffff
 375 };
 376
 377 /* ---------------------------------------------------------------------- */
 378
 379 static int oscMHz = 12;
 380
 381 static int tms470_handle_osc_megahertz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 382 {
 383         if (argc > 1)
 384         {
 385                 command_print(cmd_ctx, "tms470 osc_megahertz <MHz>");
 386                 return ERROR_INVALID_ARGUMENTS;
 387         }
 388         else if (argc == 1)
 389         {
 390                 sscanf(args[0], "%d", &oscMHz);
 391         }
 392
 393         if (oscMHz <= 0)
 394         {
 395                 LOG_ERROR("osc_megahertz must be positive and non-zero!");
 396                 command_print(cmd_ctx, "osc_megahertz must be positive and non-zero!");
 397                 oscMHz = 12;
 398                 return ERROR_INVALID_ARGUMENTS;
 399         }
 400
 401         command_print(cmd_ctx, "osc_megahertz=%d", oscMHz);
 402
 403         return ERROR_OK;
 404 }
 405
 406 /* ---------------------------------------------------------------------- */
 407
 408 static int plldis = 0;
 409
 410 static int tms470_handle_plldis_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 411 {
 412         if (argc > 1)
 413         {
 414                 command_print(cmd_ctx, "tms470 plldis <0 | 1>");
 415                 return ERROR_INVALID_ARGUMENTS;
 416         }
 417         else if (argc == 1)
 418         {
 419                 sscanf(args[0], "%d", &plldis);
 420                 plldis = plldis ? 1 : 0;
 421         }
 422
 423         command_print(cmd_ctx, "plldis=%d", plldis);
 424
 425         return ERROR_OK;
 426 }
 427
 428 /* ---------------------------------------------------------------------- */
 429
 430 static int tms470_check_flash_unlocked(target_t * target)
 431 {
 432         uint32_t fmbbusy;
 433
 434         target_read_u32(target, 0xFFE89C08, &fmbbusy);
 435         LOG_INFO("tms470 fmbbusy = 0x%08" PRIx32 " -> %s", fmbbusy, fmbbusy & 0x8000 ? "unlocked" : "LOCKED");
 436         return fmbbusy & 0x8000 ? ERROR_OK : ERROR_FLASH_OPERATION_FAILED;
 437 }
 438
 439 /* ---------------------------------------------------------------------- */
 440
 441 static int tms470_try_flash_keys(target_t * target, const uint32_t * key_set)
 442 {
 443         uint32_t glbctrl, fmmstat;
 444         int retval = ERROR_FLASH_OPERATION_FAILED;
 445
 446         /* set GLBCTRL.4  */
 447         target_read_u32(target, 0xFFFFFFDC, &glbctrl);
 448         target_write_u32(target, 0xFFFFFFDC, glbctrl | 0x10);
 449
 450         /* only perform the key match when 3VSTAT is clear */
 451         target_read_u32(target, 0xFFE8BC0C, &fmmstat);
 452         if (!(fmmstat & 0x08))
 453         {
 454                 unsigned i;
 455                 uint32_t fmbptr, fmbac2, orig_fmregopt;
 456
 457                 target_write_u32(target, 0xFFE8BC04, fmmstat & ~0x07);
 458
 459                 /* wait for pump ready */
 460                 do
 461                 {
 462                         target_read_u32(target, 0xFFE8A814, &fmbptr);
 463                         alive_sleep(1);
 464                 }
 465                 while (!(fmbptr & 0x0200));
 466
 467                 /* force max wait states */
 468                 target_read_u32(target, 0xFFE88004, &fmbac2);
 469                 target_write_u32(target, 0xFFE88004, fmbac2 | 0xff);
 470
 471                 /* save current access mode, force normal read mode */
 472                 target_read_u32(target, 0xFFE89C00, &orig_fmregopt);
 473                 target_write_u32(target, 0xFFE89C00, 0x00);
 474
 475                 for (i = 0; i < 4; i++)
 476                 {
 477                         uint32_t tmp;
 478
 479                         /* There is no point displaying the value of tmp, it is
 480                          * filtered by the chip.  The purpose of this read is to
 481                          * prime the unlocking logic rather than read out the value.
 482                          */
 483                         target_read_u32(target, 0x00001FF0 + 4 * i, &tmp);
 484
 485                         LOG_INFO("tms470 writing fmpkey = 0x%08" PRIx32 "", key_set[i]);
 486                         target_write_u32(target, 0xFFE89C0C, key_set[i]);
 487                 }
 488
 489                 if (ERROR_OK == tms470_check_flash_unlocked(target))
 490                 {
 491                         /*
 492                          * There seems to be a side-effect of reading the FMPKEY
 493                          * register in that it re-enables the protection.  So we
 494                          * re-enable it.
 495                          */
 496                         for (i = 0; i < 4; i++)
 497                         {
 498                                 uint32_t tmp;
 499
 500                                 target_read_u32(target, 0x00001FF0 + 4 * i, &tmp);
 501                                 target_write_u32(target, 0xFFE89C0C, key_set[i]);
 502                         }
 503                         retval = ERROR_OK;
 504                 }
 505
 506                 /* restore settings */
 507                 target_write_u32(target, 0xFFE89C00, orig_fmregopt);
 508                 target_write_u32(target, 0xFFE88004, fmbac2);
 509         }
 510
 511         /* clear config bit */
 512         target_write_u32(target, 0xFFFFFFDC, glbctrl);
 513
 514         return retval;
 515 }
 516
 517 /* ---------------------------------------------------------------------- */
 518
 519 static int tms470_unlock_flash(struct flash_bank_s *bank)
 520 {
 521         target_t *target = bank->target;
 522         const uint32_t *p_key_sets[5];
 523         unsigned i, key_set_count;
 524
 525         if (keysSet)
 526         {
 527                 key_set_count = 5;
 528                 p_key_sets[0] = flashKeys;
 529                 p_key_sets[1] = FLASH_KEYS_ALL_ONES;
 530                 p_key_sets[2] = FLASH_KEYS_ALL_ZEROS;
 531                 p_key_sets[3] = FLASH_KEYS_MIX1;
 532                 p_key_sets[4] = FLASH_KEYS_MIX2;
 533         }
 534         else
 535         {
 536                 key_set_count = 4;
 537                 p_key_sets[0] = FLASH_KEYS_ALL_ONES;
 538                 p_key_sets[1] = FLASH_KEYS_ALL_ZEROS;
 539                 p_key_sets[2] = FLASH_KEYS_MIX1;
 540                 p_key_sets[3] = FLASH_KEYS_MIX2;
 541         }
 542
 543         for (i = 0; i < key_set_count; i++)
 544         {
 545                 if (tms470_try_flash_keys(target, p_key_sets[i]) == ERROR_OK)
 546                 {
 547                         LOG_INFO("tms470 flash is unlocked");
 548                         return ERROR_OK;
 549                 }
 550         }
 551
 552         LOG_WARNING("tms470 could not unlock flash memory protection level 2");
 553         return ERROR_FLASH_OPERATION_FAILED;
 554 }
 555
 556 /* ---------------------------------------------------------------------- */
 557
 558 static int tms470_flash_initialize_internal_state_machine(struct flash_bank_s *bank)
 559 {
 560         uint32_t fmmac2, fmmac1, fmmaxep, k, delay, glbctrl, sysclk;
 561         target_t *target = bank->target;
 562         tms470_flash_bank_t *tms470_info = bank->driver_priv;
 563         int result = ERROR_OK;
 564
 565         /*
 566          * Select the desired bank to be programmed by writing BANK[2:0] of
 567          * FMMAC2.
 568          */
 569         target_read_u32(target, 0xFFE8BC04, &fmmac2);
 570         fmmac2 &= ~0x0007;
 571         fmmac2 |= (tms470_info->ordinal & 7);
 572         target_write_u32(target, 0xFFE8BC04, fmmac2);
 573         LOG_DEBUG("set fmmac2 = 0x%04" PRIx32 "", fmmac2);
 574
 575         /*
 576          * Disable level 1 sector protection by setting bit 15 of FMMAC1.
 577          */
 578         target_read_u32(target, 0xFFE8BC00, &fmmac1);
 579         fmmac1 |= 0x8000;
 580         target_write_u32(target, 0xFFE8BC00, fmmac1);
 581         LOG_DEBUG("set fmmac1 = 0x%04" PRIx32 "", fmmac1);
 582
 583         /*
 584          * FMTCREG = 0x2fc0;
 585          */
 586         target_write_u32(target, 0xFFE8BC10, 0x2fc0);
 587         LOG_DEBUG("set fmtcreg = 0x2fc0");
 588
 589         /*
 590          * MAXPP = 50
 591          */
 592         target_write_u32(target, 0xFFE8A07C, 50);
 593         LOG_DEBUG("set fmmaxpp = 50");
 594
 595         /*
 596          * MAXCP = 0xf000 + 2000
 597          */
 598         target_write_u32(target, 0xFFE8A084, 0xf000 + 2000);
 599         LOG_DEBUG("set fmmaxcp = 0x%04x", 0xf000 + 2000);
 600
 601         /*
 602          * configure VHV
 603          */
 604         target_read_u32(target, 0xFFE8A080, &fmmaxep);
 605         if (fmmaxep == 0xf000)
 606         {
 607                 fmmaxep = 0xf000 + 4095;
 608                 target_write_u32(target, 0xFFE8A80C, 0x9964);
 609                 LOG_DEBUG("set fmptr3 = 0x9964");
 610         }
 611         else
 612         {
 613                 fmmaxep = 0xa000 + 4095;
 614                 target_write_u32(target, 0xFFE8A80C, 0x9b64);
 615                 LOG_DEBUG("set fmptr3 = 0x9b64");
 616         }
 617         target_write_u32(target, 0xFFE8A080, fmmaxep);
 618         LOG_DEBUG("set fmmaxep = 0x%04" PRIx32 "", fmmaxep);
 619
 620         /*
 621          * FMPTR4 = 0xa000
 622          */
 623         target_write_u32(target, 0xFFE8A810, 0xa000);
 624         LOG_DEBUG("set fmptr4 = 0xa000");
 625
 626         /*
 627          * FMPESETUP, delay parameter selected based on clock frequency.
 628          *
 629          * According to the TI App Note SPNU257 and flashing code, delay is
 630          * int((sysclk(MHz) + 1) / 2), with a minimum of 5.  The system
 631          * clock is usually derived from the ZPLL module, and selected by
 632          * the plldis global.
 633          */
 634         target_read_u32(target, 0xFFFFFFDC, &glbctrl);
 635         sysclk = (plldis ? 1 : (glbctrl & 0x08) ? 4 : 8) * oscMHz / (1 + (glbctrl & 7));
 636         delay = (sysclk > 10) ? (sysclk + 1) / 2 : 5;
 637         target_write_u32(target, 0xFFE8A018, (delay << 4) | (delay << 8));
 638         LOG_DEBUG("set fmpsetup = 0x%04" PRIx32 "", (delay << 4) | (delay << 8));
 639
 640         /*
 641          * FMPVEVACCESS, based on delay.
 642          */
 643         k = delay | (delay << 8);
 644         target_write_u32(target, 0xFFE8A05C, k);
 645         LOG_DEBUG("set fmpvevaccess = 0x%04" PRIx32 "", k);
 646
 647         /*
 648          * FMPCHOLD, FMPVEVHOLD, FMPVEVSETUP, based on delay.
 649          */
 650         k <<= 1;
 651         target_write_u32(target, 0xFFE8A034, k);
 652         LOG_DEBUG("set fmpchold = 0x%04" PRIx32 "", k);
 653         target_write_u32(target, 0xFFE8A040, k);
 654         LOG_DEBUG("set fmpvevhold = 0x%04" PRIx32 "", k);
 655         target_write_u32(target, 0xFFE8A024, k);
 656         LOG_DEBUG("set fmpvevsetup = 0x%04" PRIx32 "", k);
 657
 658         /*
 659          * FMCVACCESS, based on delay.
 660          */
 661         k = delay * 16;
 662         target_write_u32(target, 0xFFE8A060, k);
 663         LOG_DEBUG("set fmcvaccess = 0x%04" PRIx32 "", k);
 664
 665         /*
 666          * FMCSETUP, based on delay.
 667          */
 668         k = 0x3000 | delay * 20;
 669         target_write_u32(target, 0xFFE8A020, k);
 670         LOG_DEBUG("set fmcsetup = 0x%04" PRIx32 "", k);
 671
 672         /*
 673          * FMEHOLD, based on delay.
 674          */
 675         k = (delay * 20) << 2;
 676         target_write_u32(target, 0xFFE8A038, k);
 677         LOG_DEBUG("set fmehold = 0x%04" PRIx32 "", k);
 678
 679         /*
 680          * PWIDTH, CWIDTH, EWIDTH, based on delay.
 681          */
 682         target_write_u32(target, 0xFFE8A050, delay * 8);
 683         LOG_DEBUG("set fmpwidth = 0x%04" PRIx32 "", delay * 8);
 684         target_write_u32(target, 0xFFE8A058, delay * 1000);
 685         LOG_DEBUG("set fmcwidth = 0x%04" PRIx32 "", delay * 1000);
 686         target_write_u32(target, 0xFFE8A054, delay * 5400);
 687         LOG_DEBUG("set fmewidth = 0x%04" PRIx32 "", delay * 5400);
 688
 689         return result;
 690 }
 691
 692 /* ---------------------------------------------------------------------- */
 693
 694 int tms470_flash_status(struct flash_bank_s *bank)
 695 {
 696         target_t *target = bank->target;
 697         int result = ERROR_OK;
 698         uint32_t fmmstat;
 699
 700         target_read_u32(target, 0xFFE8BC0C, &fmmstat);
 701         LOG_DEBUG("set fmmstat = 0x%04" PRIx32 "", fmmstat);
 702
 703         if (fmmstat & 0x0080)
 704         {
 705                 LOG_WARNING("tms470 flash command: erase still active after busy clear.");
 706                 result = ERROR_FLASH_OPERATION_FAILED;
 707         }
 708
 709         if (fmmstat & 0x0040)
 710         {
 711                 LOG_WARNING("tms470 flash command: program still active after busy clear.");
 712                 result = ERROR_FLASH_OPERATION_FAILED;
 713         }
 714
 715         if (fmmstat & 0x0020)
 716         {
 717                 LOG_WARNING("tms470 flash command: invalid data command.");
 718                 result = ERROR_FLASH_OPERATION_FAILED;
 719         }
 720
 721         if (fmmstat & 0x0010)
 722         {
 723                 LOG_WARNING("tms470 flash command: program, erase or validate sector failed.");
 724                 result = ERROR_FLASH_OPERATION_FAILED;
 725         }
 726
 727         if (fmmstat & 0x0008)
 728         {
 729                 LOG_WARNING("tms470 flash command: voltage instability detected.");
 730                 result = ERROR_FLASH_OPERATION_FAILED;
 731         }
 732
 733         if (fmmstat & 0x0006)
 734         {
 735                 LOG_WARNING("tms470 flash command: command suspend detected.");
 736                 result = ERROR_FLASH_OPERATION_FAILED;
 737         }
 738
 739         if (fmmstat & 0x0001)
 740         {
 741                 LOG_WARNING("tms470 flash command: sector was locked.");
 742                 result = ERROR_FLASH_OPERATION_FAILED;
 743         }
 744
 745         return result;
 746 }
 747
 748 /* ---------------------------------------------------------------------- */
 749
 750 static int tms470_erase_sector(struct flash_bank_s *bank, int sector)
 751 {
 752         uint32_t glbctrl, orig_fmregopt, fmbsea, fmbseb, fmmstat;
 753         target_t *target = bank->target;
 754         uint32_t flashAddr = bank->base + bank->sectors[sector].offset;
 755         int result = ERROR_OK;
 756
 757         /*
 758          * Set the bit GLBCTRL4 of the GLBCTRL register (in the System
 759          * module) to enable writing to the flash registers }.
 760          */
 761         target_read_u32(target, 0xFFFFFFDC, &glbctrl);
 762         target_write_u32(target, 0xFFFFFFDC, glbctrl | 0x10);
 763         LOG_DEBUG("set glbctrl = 0x%08" PRIx32 "", glbctrl | 0x10);
 764
 765         /* Force normal read mode. */
 766         target_read_u32(target, 0xFFE89C00, &orig_fmregopt);
 767         target_write_u32(target, 0xFFE89C00, 0);
 768         LOG_DEBUG("set fmregopt = 0x%08x", 0);
 769
 770         (void)tms470_flash_initialize_internal_state_machine(bank);
 771
 772         /*
 773          * Select one or more bits in FMBSEA or FMBSEB to disable Level 1
 774          * protection for the particular sector to be erased/written.
 775          */
 776         if (sector < 16)
 777         {
 778                 target_read_u32(target, 0xFFE88008, &fmbsea);
 779                 target_write_u32(target, 0xFFE88008, fmbsea | (1 << sector));
 780                 LOG_DEBUG("set fmbsea = 0x%04" PRIx32 "", fmbsea | (1 << sector));
 781         }
 782         else
 783         {
 784                 target_read_u32(target, 0xFFE8800C, &fmbseb);
 785                 target_write_u32(target, 0xFFE8800C, fmbseb | (1 << (sector - 16)));
 786                 LOG_DEBUG("set fmbseb = 0x%04" PRIx32 "", fmbseb | (1 << (sector - 16)));
 787         }
 788         bank->sectors[sector].is_protected = 0;
 789
 790         /*
 791          * clear status regiser, sent erase command, kickoff erase
 792          */
 793         target_write_u16(target, flashAddr, 0x0040);
 794         LOG_DEBUG("write *(uint16_t *)0x%08" PRIx32 "=0x0040", flashAddr);
 795         target_write_u16(target, flashAddr, 0x0020);
 796         LOG_DEBUG("write *(uint16_t *)0x%08" PRIx32 "=0x0020", flashAddr);
 797         target_write_u16(target, flashAddr, 0xffff);
 798         LOG_DEBUG("write *(uint16_t *)0x%08" PRIx32 "=0xffff", flashAddr);
 799
 800         /*
 801          * Monitor FMMSTAT, busy until clear, then check and other flags for
 802          * ultimate result of the operation.
 803          */
 804         do
 805         {
 806                 target_read_u32(target, 0xFFE8BC0C, &fmmstat);
 807                 if (fmmstat & 0x0100)
 808                 {
 809                         alive_sleep(1);
 810                 }
 811         }
 812         while (fmmstat & 0x0100);
 813
 814         result = tms470_flash_status(bank);
 815
 816         if (sector < 16)
 817         {
 818                 target_write_u32(target, 0xFFE88008, fmbsea);
 819                 LOG_DEBUG("set fmbsea = 0x%04" PRIx32 "", fmbsea);
 820                 bank->sectors[sector].is_protected = fmbsea & (1 << sector) ? 0 : 1;
 821         }
 822         else
 823         {
 824                 target_write_u32(target, 0xFFE8800C, fmbseb);
 825                 LOG_DEBUG("set fmbseb = 0x%04" PRIx32 "", fmbseb);
 826                 bank->sectors[sector].is_protected = fmbseb & (1 << (sector - 16)) ? 0 : 1;
 827         }
 828         target_write_u32(target, 0xFFE89C00, orig_fmregopt);
 829         LOG_DEBUG("set fmregopt = 0x%08" PRIx32 "", orig_fmregopt);
 830         target_write_u32(target, 0xFFFFFFDC, glbctrl);
 831         LOG_DEBUG("set glbctrl = 0x%08" PRIx32 "", glbctrl);
 832
 833         if (result == ERROR_OK)
 834         {
 835                 bank->sectors[sector].is_erased = 1;
 836         }
 837
 838         return result;
 839 }
 840
 841 /* ----------------------------------------------------------------------
 842               Implementation of Flash Driver Interfaces
 843    ---------------------------------------------------------------------- */
 844
 845 static int tms470_register_commands(struct command_context_s *cmd_ctx)
 846 {
 847         command_t *tms470_cmd = register_command(cmd_ctx, NULL, "tms470", NULL, COMMAND_ANY, "applies to TI tms470 family");
 848
 849         register_command(cmd_ctx, tms470_cmd, "flash_keyset", tms470_handle_flash_keyset_command, COMMAND_ANY, "tms470 flash_keyset <key0> <key1> <key2> <key3>");
 850         register_command(cmd_ctx, tms470_cmd, "osc_megahertz", tms470_handle_osc_megahertz_command, COMMAND_ANY, "tms470 osc_megahertz <MHz>");
 851         register_command(cmd_ctx, tms470_cmd, "plldis", tms470_handle_plldis_command, COMMAND_ANY, "tms470 plldis <0/1>");
 852
 853         return ERROR_OK;
 854 }
 855
 856 /* ---------------------------------------------------------------------- */
 857
 858 static int tms470_erase(struct flash_bank_s *bank, int first, int last)
 859 {
 860         tms470_flash_bank_t *tms470_info = bank->driver_priv;
 861         int sector, result = ERROR_OK;
 862
 863         if (bank->target->state != TARGET_HALTED)
 864         {
 865                 LOG_ERROR("Target not halted");
 866                 return ERROR_TARGET_NOT_HALTED;
 867         }
 868
 869         tms470_read_part_info(bank);
 870
 871         if ((first < 0) || (first >= bank->num_sectors) || (last < 0) || (last >= bank->num_sectors) || (first > last))
 872         {
 873                 LOG_ERROR("Sector range %d to %d invalid.", first, last);
 874                 return ERROR_FLASH_SECTOR_INVALID;
 875         }
 876
 877         result = tms470_unlock_flash(bank);
 878         if (result != ERROR_OK)
 879         {
 880                 return result;
 881         }
 882
 883         for (sector = first; sector <= last; sector++)
 884         {
 885                 LOG_INFO("Erasing tms470 bank %d sector %d...", tms470_info->ordinal, sector);
 886
 887                 result = tms470_erase_sector(bank, sector);
 888
 889                 if (result != ERROR_OK)
 890                 {
 891                         LOG_ERROR("tms470 could not erase flash sector.");
 892                         break;
 893                 }
 894                 else
 895                 {
 896                         LOG_INFO("sector erased successfully.");
 897                 }
 898         }
 899
 900         return result;
 901 }
 902
 903 /* ---------------------------------------------------------------------- */
 904
 905 static int tms470_protect(struct flash_bank_s *bank, int set, int first, int last)
 906 {
 907         tms470_flash_bank_t *tms470_info = bank->driver_priv;
 908         target_t *target = bank->target;
 909         uint32_t fmmac2, fmbsea, fmbseb;
 910         int sector;
 911
 912         if (target->state != TARGET_HALTED)
 913         {
 914                 LOG_ERROR("Target not halted");
 915                 return ERROR_TARGET_NOT_HALTED;
 916         }
 917
 918         tms470_read_part_info(bank);
 919
 920         if ((first < 0) || (first >= bank->num_sectors) || (last < 0) || (last >= bank->num_sectors) || (first > last))
 921         {
 922                 LOG_ERROR("Sector range %d to %d invalid.", first, last);
 923                 return ERROR_FLASH_SECTOR_INVALID;
 924         }
 925
 926         /* enable the appropriate bank */
 927         target_read_u32(target, 0xFFE8BC04, &fmmac2);
 928         target_write_u32(target, 0xFFE8BC04, (fmmac2 & ~7) | tms470_info->ordinal);
 929
 930         /* get the original sector proection flags for this bank */
 931         target_read_u32(target, 0xFFE88008, &fmbsea);
 932         target_read_u32(target, 0xFFE8800C, &fmbseb);
 933
 934         for (sector = 0; sector < bank->num_sectors; sector++)
 935         {
 936                 if (sector < 16)
 937                 {
 938                         fmbsea = set ? fmbsea & ~(1 << sector) : fmbsea | (1 << sector);
 939                         bank->sectors[sector].is_protected = set ? 1 : 0;
 940                 }
 941                 else
 942                 {
 943                         fmbseb = set ? fmbseb & ~(1 << (sector - 16)) : fmbseb | (1 << (sector - 16));
 944                         bank->sectors[sector].is_protected = set ? 1 : 0;
 945                 }
 946         }
 947
 948         /* update the protection bits */
 949         target_write_u32(target, 0xFFE88008, fmbsea);
 950         target_write_u32(target, 0xFFE8800C, fmbseb);
 951
 952         return ERROR_OK;
 953 }
 954
 955 /* ---------------------------------------------------------------------- */
 956
 957 static int tms470_write(struct flash_bank_s *bank, uint8_t * buffer, uint32_t offset, uint32_t count)
 958 {
 959         target_t *target = bank->target;
 960         uint32_t glbctrl, fmbac2, orig_fmregopt, fmbsea, fmbseb, fmmaxpp, fmmstat;
 961         int result = ERROR_OK;
 962         uint32_t i;
 963
 964         if (target->state != TARGET_HALTED)
 965         {
 966                 LOG_ERROR("Target not halted");
 967                 return ERROR_TARGET_NOT_HALTED;
 968         }
 969
 970         tms470_read_part_info(bank);
 971
 972         LOG_INFO("Writing %" PRId32 " bytes starting at 0x%08" PRIx32 "", count, bank->base + offset);
 973
 974         /* set GLBCTRL.4  */
 975         target_read_u32(target, 0xFFFFFFDC, &glbctrl);
 976         target_write_u32(target, 0xFFFFFFDC, glbctrl | 0x10);
 977
 978         (void)tms470_flash_initialize_internal_state_machine(bank);
 979
 980         /* force max wait states */
 981         target_read_u32(target, 0xFFE88004, &fmbac2);
 982         target_write_u32(target, 0xFFE88004, fmbac2 | 0xff);
 983
 984         /* save current access mode, force normal read mode */
 985         target_read_u32(target, 0xFFE89C00, &orig_fmregopt);
 986         target_write_u32(target, 0xFFE89C00, 0x00);
 987
 988         /*
 989          * Disable Level 1 protection for all sectors to be erased/written.
 990          */
 991         target_read_u32(target, 0xFFE88008, &fmbsea);
 992         target_write_u32(target, 0xFFE88008, 0xffff);
 993         target_read_u32(target, 0xFFE8800C, &fmbseb);
 994         target_write_u32(target, 0xFFE8800C, 0xffff);
 995
 996         /* read MAXPP */
 997         target_read_u32(target, 0xFFE8A07C, &fmmaxpp);
 998
 999         for (i = 0; i < count; i += 2)
1000         {
1001                 uint32_t addr = bank->base + offset + i;
1002                 uint16_t word = (((uint16_t) buffer[i]) << 8) | (uint16_t) buffer[i + 1];
1003
1004                 if (word != 0xffff)
1005                 {
1006                         LOG_INFO("writing 0x%04x at 0x%08" PRIx32 "", word, addr);
1007
1008                         /* clear status register */
1009                         target_write_u16(target, addr, 0x0040);
1010                         /* program flash command */
1011                         target_write_u16(target, addr, 0x0010);
1012                         /* burn the 16-bit word (big-endian) */
1013                         target_write_u16(target, addr, word);
1014
1015                         /*
1016                          * Monitor FMMSTAT, busy until clear, then check and other flags
1017                          * for ultimate result of the operation.
1018                          */
1019                         do
1020                         {
1021                                 target_read_u32(target, 0xFFE8BC0C, &fmmstat);
1022                                 if (fmmstat & 0x0100)
1023                                 {
1024                                         alive_sleep(1);
1025                                 }
1026                         }
1027                         while (fmmstat & 0x0100);
1028
1029                         if (fmmstat & 0x3ff)
1030                         {
1031                                 LOG_ERROR("fmstat = 0x%04" PRIx32 "", fmmstat);
1032                                 LOG_ERROR("Could not program word 0x%04x at address 0x%08" PRIx32 ".", word, addr);
1033                                 result = ERROR_FLASH_OPERATION_FAILED;
1034                                 break;
1035                         }
1036                 }
1037                 else
1038                 {
1039                         LOG_INFO("skipping 0xffff at 0x%08" PRIx32 "", addr);
1040                 }
1041         }
1042
1043         /* restore */
1044         target_write_u32(target, 0xFFE88008, fmbsea);
1045         target_write_u32(target, 0xFFE8800C, fmbseb);
1046         target_write_u32(target, 0xFFE88004, fmbac2);
1047         target_write_u32(target, 0xFFE89C00, orig_fmregopt);
1048         target_write_u32(target, 0xFFFFFFDC, glbctrl);
1049
1050         return result;
1051 }
1052
1053 /* ---------------------------------------------------------------------- */
1054
1055 static int tms470_probe(struct flash_bank_s *bank)
1056 {
1057         if (bank->target->state != TARGET_HALTED)
1058         {
1059                 LOG_WARNING("Cannot communicate... target not halted.");
1060                 return ERROR_TARGET_NOT_HALTED;
1061         }
1062
1063         return tms470_read_part_info(bank);
1064 }
1065
1066 static int tms470_auto_probe(struct flash_bank_s *bank)
1067 {
1068         tms470_flash_bank_t *tms470_info = bank->driver_priv;
1069
1070         if (tms470_info->device_ident_reg)
1071                 return ERROR_OK;
1072         return tms470_probe(bank);
1073 }
1074
1075 /* ---------------------------------------------------------------------- */
1076
1077 static int tms470_erase_check(struct flash_bank_s *bank)
1078 {
1079         target_t *target = bank->target;
1080         tms470_flash_bank_t *tms470_info = bank->driver_priv;
1081         int sector, result = ERROR_OK;
1082         uint32_t fmmac2, fmbac2, glbctrl, orig_fmregopt;
1083         static uint8_t buffer[64 * 1024];
1084
1085         if (target->state != TARGET_HALTED)
1086         {
1087                 LOG_ERROR("Target not halted");
1088                 return ERROR_TARGET_NOT_HALTED;
1089         }
1090
1091         if (!tms470_info->device_ident_reg)
1092         {
1093                 tms470_read_part_info(bank);
1094         }
1095
1096         /* set GLBCTRL.4  */
1097         target_read_u32(target, 0xFFFFFFDC, &glbctrl);
1098         target_write_u32(target, 0xFFFFFFDC, glbctrl | 0x10);
1099
1100         /* save current access mode, force normal read mode */
1101         target_read_u32(target, 0xFFE89C00, &orig_fmregopt);
1102         target_write_u32(target, 0xFFE89C00, 0x00);
1103
1104         /* enable the appropriate bank */
1105         target_read_u32(target, 0xFFE8BC04, &fmmac2);
1106         target_write_u32(target, 0xFFE8BC04, (fmmac2 & ~7) | tms470_info->ordinal);
1107
1108         /* TCR = 0 */
1109         target_write_u32(target, 0xFFE8BC10, 0x2fc0);
1110
1111         /* clear TEZ in fmbrdy */
1112         target_write_u32(target, 0xFFE88010, 0x0b);
1113
1114         /* save current wait states, force max */
1115         target_read_u32(target, 0xFFE88004, &fmbac2);
1116         target_write_u32(target, 0xFFE88004, fmbac2 | 0xff);
1117
1118         /*
1119          * The TI primitives inspect the flash memory by reading one 32-bit
1120          * word at a time.  Here we read an entire sector and inspect it in
1121          * an attempt to reduce the JTAG overhead.
1122          */
1123         for (sector = 0; sector < bank->num_sectors; sector++)
1124         {
1125                 if (bank->sectors[sector].is_erased != 1)
1126                 {
1127                         uint32_t i, addr = bank->base + bank->sectors[sector].offset;
1128
1129                         LOG_INFO("checking flash bank %d sector %d", tms470_info->ordinal, sector);
1130
1131                         target_read_buffer(target, addr, bank->sectors[sector].size, buffer);
1132
1133                         bank->sectors[sector].is_erased = 1;
1134                         for (i = 0; i < bank->sectors[sector].size; i++)
1135                         {
1136                                 if (buffer[i] != 0xff)
1137                                 {
1138                                         LOG_WARNING("tms470 bank %d, sector %d, not erased.", tms470_info->ordinal, sector);
1139                                         LOG_WARNING("at location 0x%08" PRIx32 ": flash data is 0x%02x.", addr + i, buffer[i]);
1140
1141                                         bank->sectors[sector].is_erased = 0;
1142                                         break;
1143                                 }
1144                         }
1145                 }
1146                 if (bank->sectors[sector].is_erased != 1)
1147                 {
1148                         result = ERROR_FLASH_SECTOR_NOT_ERASED;
1149                         break;
1150                 }
1151                 else
1152                 {
1153                         LOG_INFO("sector erased");
1154                 }
1155         }
1156
1157         /* reset TEZ, wait states, read mode, GLBCTRL.4 */
1158         target_write_u32(target, 0xFFE88010, 0x0f);
1159         target_write_u32(target, 0xFFE88004, fmbac2);
1160         target_write_u32(target, 0xFFE89C00, orig_fmregopt);
1161         target_write_u32(target, 0xFFFFFFDC, glbctrl);
1162
1163         return result;
1164 }
1165
1166 /* ---------------------------------------------------------------------- */
1167
1168 static int tms470_protect_check(struct flash_bank_s *bank)
1169 {
1170         target_t *target = bank->target;
1171         tms470_flash_bank_t *tms470_info = bank->driver_priv;
1172         int sector, result = ERROR_OK;
1173         uint32_t fmmac2, fmbsea, fmbseb;
1174
1175         if (target->state != TARGET_HALTED)
1176         {
1177                 LOG_ERROR("Target not halted");
1178                 return ERROR_TARGET_NOT_HALTED;
1179         }
1180
1181         if (!tms470_info->device_ident_reg)
1182         {
1183                 tms470_read_part_info(bank);
1184         }
1185
1186         /* enable the appropriate bank */
1187         target_read_u32(target, 0xFFE8BC04, &fmmac2);
1188         target_write_u32(target, 0xFFE8BC04, (fmmac2 & ~7) | tms470_info->ordinal);
1189
1190         target_read_u32(target, 0xFFE88008, &fmbsea);
1191         target_read_u32(target, 0xFFE8800C, &fmbseb);
1192
1193         for (sector = 0; sector < bank->num_sectors; sector++)
1194         {
1195                 int protected;
1196
1197                 if (sector < 16)
1198                 {
1199                         protected = fmbsea & (1 << sector) ? 0 : 1;
1200                         bank->sectors[sector].is_protected = protected;
1201                 }
1202                 else
1203                 {
1204                         protected = fmbseb & (1 << (sector - 16)) ? 0 : 1;
1205                         bank->sectors[sector].is_protected = protected;
1206                 }
1207
1208                 LOG_DEBUG("bank %d sector %d is %s", tms470_info->ordinal, sector, protected ? "protected" : "not protected");
1209         }
1210
1211         return result;
1212 }
1213
1214 /* ---------------------------------------------------------------------- */
1215
1216 static int tms470_info(struct flash_bank_s *bank, char *buf, int buf_size)
1217 {
1218         int used = 0;
1219         tms470_flash_bank_t *tms470_info = bank->driver_priv;
1220
1221         if (!tms470_info->device_ident_reg)
1222         {
1223                 tms470_read_part_info(bank);
1224         }
1225
1226         if (!tms470_info->device_ident_reg)
1227         {
1228                 (void)snprintf(buf, buf_size, "Cannot identify target as a TMS470\n");
1229                 return ERROR_FLASH_OPERATION_FAILED;
1230         }
1231
1232         used += snprintf(buf, buf_size, "\ntms470 information: Chip is %s\n", tms470_info->part_name);
1233         buf += used;
1234         buf_size -= used;
1235
1236         used += snprintf(buf, buf_size, "Flash protection level 2 is %s\n", tms470_check_flash_unlocked(bank->target) == ERROR_OK ? "disabled" : "enabled");
1237         buf += used;
1238         buf_size -= used;
1239
1240         return ERROR_OK;
1241 }
1242
1243 /* ---------------------------------------------------------------------- */
1244
1245 /*
1246  * flash bank tms470 <base> <size> <chip_width> <bus_width> <target>
1247  * [options...]
1248  */
1249
1250 static int tms470_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
1251 {
1252         bank->driver_priv = malloc(sizeof(tms470_flash_bank_t));
1253
1254         if (!bank->driver_priv)
1255         {
1256                 return ERROR_FLASH_OPERATION_FAILED;
1257         }
1258
1259         (void)memset(bank->driver_priv, 0, sizeof(tms470_flash_bank_t));
1260
1261         return ERROR_OK;
1262 }